1. It's going to be different for everyone. I think it should be activities that leave you feeling physically and mentally refreshed. Learning a new musical instrument and mountain climbing helped myself. I have had other coworkers who found a lot of value in learning to dance.

2. Be realistic about the fact you need a mental break. Avoid burning yourself out anymore than you already are. Discuss your strategy and reasoning with your family so it's not a shock to them and have a plan on how to cover finances and health-care.